5(x-1.7)/(x+0.9)=3

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5(x-1.7)/(x+0.9)=3
5(x-1.7)/(x+0.9)=3

5(x-1.7)/(x+0.9)=3
5(x-1.7)=3（x+0.9）
5x-8.5=3x+2.7
5x-3x=2.7+8.5
2x=11.2
x=5.6

5X-8.5=3X+2.7
2X=11.2
X=5.6
采纳、

x等于2a分之负b加减根号下b方减4ac，于是x1=1.91，x2=-1.11

原式===> 5(x-1.7)=3(x+0.9)
===> 5x-8.5=3x+2.7
===> 5x-3x=2.7+8.5
===> 2x=11.2
===> x=11.2/2
===> x=5.6

5(x-1.7)/(x+0.9)=3 用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+. x-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4（x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1 解方程:(x+10)+(x-15)=280-x x+15=3*(109-x) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(...解方程:(x+10)+(x-15)=280-xx+15=3*(109-x) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7)13x-4(2x+5)=17(x-2)-4(2x-1) 5X+45+55=600 X-0.52X=96 4x+6x-2x=10 4.5x+0.9X=0.54 6(3X+3)=360 1.7(5X-10)=34 12X+7=7X+37 4X-6=7X-36方程的解不会的别乱答题求X是多少 jijiji x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? (x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3) 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) x-2x+3x-4x+5x.+99x-100x=25求解 2x+3x+4x+5x+x+6x+7x=100 x(x-2)-2x(x+1)-3x(x-5) 其中x=负½ x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x 3x-x=0.9求x x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? 已知3x*x-x=1,求6x*x*x+7x*x-5x+2000 3x+5x=?x等于 3x+5x-6x=? 3x+5x=8x.